One. But he doesn't screw it in, he just holds it and the world revolves around him.
Tell him the lightbulb is his mother.
To get to the other side..
They dont. They turn it into the hype of the new generation.
Only one but they'll insist on going through about 5 bulbs before they find one that suits this particular room and situation.
One to hold the lightbulb, and the rest of the world to revolve around them
None. They just grab it and the world to revolve around them.
He holds it up to the socket and the world revolves around him.
One. He stands in place while the whole world revolves around him.